I really did like the writing style of this book. I really did like the historical aspects of the story and learning of the culture of how women were treated during that that time, if they are in the police bureau because we're treated like  maids but also help with investigation but during this man werent alot touch women or even go in room spaces. But Seol is very impressive, I love her as the main character trying to figure the case and wanting to figure the evidence and who was involved in the murderer's of the people who believed in Christianity ( who is banned because it western teaching and it come China)
I do like the plot twist, in trying to figure who did the murderer's in the capital cause of this religion that is banned. I do like how some people different perfectures and how everyone know something about the religion knowing they are bad but knowing those to practice this religion. 
The character development is very good. There something I would change about Seol I do wish she would have inspector Han questions and does he know who she is. Han was always answering her question even though she was getting in the was of investigation sometimes. But if she didn't we won't have a story now would we. I do like the little side character and some of somewhat main character that adds something to story to help it jeep going.